Home / 19,305.87-28,928.57-15,409.23

Finding the Fourth Proportional to 19,305.87, 28,928.57 and 15,409.23

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Solution

The fourth proportional to 19,305.87, 28,928.57 and 15,409.23 is: 23,089.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,305.87 : 28,928.57 = 15,409.23 : x
  2. Step 2: Convert to fraction form
    19,305.87/28,928.57 = 15,409.23/x
  3. Step 3: Cross multiply
    19,305.87x = 28,928.57 × 15,409.23
  4. Step 4: Simplify right side
    19,305.87x = 445,766,911.65
  5. Step 5: Solve for x
    x = 445,766,911.65/19,305.87
  6. Step 6: Final answer
    x = 23,089.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.